Merged cases of C.moveWindow() on Windows containers to one place (container_windows.go) as a method on container.

redo/container_windows.go

@@ -52,6 +52,11 @@ func (c *container) setParent(p *controlParent) {
 	C.controlSetParent(c.hwnd, p.hwnd)
 }
 
+// this is needed because Windows won't move/resize a child window for us
+func (c *container) move(r *C.RECT) {
+	C.moveWindow(c.hwnd, C.int(r.left), C.int(r.top), C.int(r.right - r.left), C.int(r.bottom - r.top))
+}
+
 //export storeContainerHWND
 func storeContainerHWND(data unsafe.Pointer, hwnd C.HWND) {
 	c := (*container)(data)

redo/tab_windows.go

@@ -106,9 +106,7 @@ func (t *tab) commitResize(c *allocation, d *sizing) {
 	// don't resize just the current tab; resize all tabs!
 	for _, c := range t.tabs {
 		// because each widget is actually a child of the Window, the origin is the one we calculated above
-		// we use moveWindow() rather than calling resize() directly
-		// TODO
-		C.moveWindow(c.hwnd, C.int(r.left), C.int(r.top), C.int(r.right - r.left), C.int(r.bottom - r.top))
+		c.move(&r)
 	}
 	// and now resize the tab control itself
 	basecommitResize(t, c, d)

redo/window_windows.go

@@ -88,8 +88,7 @@ func storeWindowHWND(data unsafe.Pointer, hwnd C.HWND) {
 func windowResize(data unsafe.Pointer, r *C.RECT) {
 	w := (*window)(data)
 	// the origin of the window's content area is always (0, 0), but let's use the values from the RECT just to be safe
-	// TODO
-	C.moveWindow(w.container.hwnd, C.int(r.left), C.int(r.top), C.int(r.right - r.left), C.int(r.bottom - r.top))
+	w.container.move(r)
 }
 
 //export windowClosing